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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - kernel/trace/trace_entries.h
2 * This file defines the trace event structures that go into the ring
3 * buffer directly. They are created via macros so that changes for them
4 * appear in the format file. Using macros will automate this process.
6 * The macro used to create a ftrace data structure is:
8 * FTRACE_ENTRY( name, struct_name, id, structure, print )
10 * @name: the name used the event name, as well as the name of
11 * the directory that holds the format file.
13 * @struct_name: the name of the structure that is created.
15 * @id: The event identifier that is used to detect what event
16 * this is from the ring buffer.
18 * @structure: the structure layout
20 * - __field( type, item )
21 * This is equivalent to declaring
24 * - __array( type, item, size )
25 * This is equivalent to declaring
29 * * for structures within structures, the format of the internal
30 * structure is layed out. This allows the internal structure
31 * to be deciphered for the format file. Although these macros
32 * may become out of sync with the internal structure, they
33 * will create a compile error if it happens. Since the
34 * internel structures are just tracing helpers, this is not
37 * When an internal structure is used, it should use:
39 * __field_struct( type, item )
41 * instead of __field. This will prevent it from being shown in
42 * the output file. The fields in the structure should use.
44 * __field_desc( type, container, item )
45 * __array_desc( type, container, item, len )
47 * type, item and len are the same as __field and __array, but
48 * container is added. This is the name of the item in
49 * __field_struct that this is describing.
52 * @print: the print format shown to users in the format file.
56 * Function trace entry - function address and parent function addres:
58 FTRACE_ENTRY(function
, ftrace_entry
,
63 __field( unsigned long, ip
)
64 __field( unsigned long, parent_ip
)
67 F_printk(" %lx <-- %lx", __entry
->ip
, __entry
->parent_ip
)
70 /* Function call entry */
71 FTRACE_ENTRY(funcgraph_entry
, ftrace_graph_ent_entry
,
76 __field_struct( struct ftrace_graph_ent
, graph_ent
)
77 __field_desc( unsigned long, graph_ent
, func
)
78 __field_desc( int, graph_ent
, depth
)
81 F_printk("--> %lx (%d)", __entry
->func
, __entry
->depth
)
84 /* Function return entry */
85 FTRACE_ENTRY(funcgraph_exit
, ftrace_graph_ret_entry
,
90 __field_struct( struct ftrace_graph_ret
, ret
)
91 __field_desc( unsigned long, ret
, func
)
92 __field_desc( unsigned long long, ret
, calltime
)
93 __field_desc( unsigned long long, ret
, rettime
)
94 __field_desc( unsigned long, ret
, overrun
)
95 __field_desc( int, ret
, depth
)
98 F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d",
99 __entry
->func
, __entry
->depth
,
100 __entry
->calltime
, __entry
->rettime
,
105 * Context switch trace entry - which task (and prio) we switched from/to:
107 * This is used for both wakeup and context switches. We only want
108 * to create one structure, but we need two outputs for it.
110 #define FTRACE_CTX_FIELDS \
111 __field( unsigned int, prev_pid ) \
112 __field( unsigned char, prev_prio ) \
113 __field( unsigned char, prev_state ) \
114 __field( unsigned int, next_pid ) \
115 __field( unsigned char, next_prio ) \
116 __field( unsigned char, next_state ) \
117 __field( unsigned int, next_cpu )
120 FTRACE_ENTRY_STRUCT_ONLY(ctx_switch_entry
,
128 FTRACE_ENTRY(context_switch
, ctx_switch_entry
,
136 F_printk("%u:%u:%u ==> %u:%u:%u [%03u]",
137 __entry
->prev_pid
, __entry
->prev_prio
, __entry
->prev_state
,
138 __entry
->next_pid
, __entry
->next_prio
, __entry
->next_state
,
144 * FTRACE_ENTRY_DUP only creates the format file, it will not
145 * create another structure.
147 FTRACE_ENTRY_DUP(wakeup
, ctx_switch_entry
,
155 F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]",
156 __entry
->prev_pid
, __entry
->prev_prio
, __entry
->prev_state
,
157 __entry
->next_pid
, __entry
->next_prio
, __entry
->next_state
,
163 * Special (free-form) trace entry:
165 FTRACE_ENTRY(special
, special_entry
,
170 __field( unsigned long, arg1
)
171 __field( unsigned long, arg2
)
172 __field( unsigned long, arg3
)
175 F_printk("(%08lx) (%08lx) (%08lx)",
176 __entry
->arg1
, __entry
->arg2
, __entry
->arg3
)
183 #define FTRACE_STACK_ENTRIES 8
185 FTRACE_ENTRY(kernel_stack
, stack_entry
,
190 __array( unsigned long, caller
, FTRACE_STACK_ENTRIES
)
193 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
194 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
195 __entry
->caller
[0], __entry
->caller
[1], __entry
->caller
[2],
196 __entry
->caller
[3], __entry
->caller
[4], __entry
->caller
[5],
197 __entry
->caller
[6], __entry
->caller
[7])
200 FTRACE_ENTRY(user_stack
, userstack_entry
,
205 __field( unsigned int, tgid
)
206 __array( unsigned long, caller
, FTRACE_STACK_ENTRIES
)
209 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
210 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
211 __entry
->caller
[0], __entry
->caller
[1], __entry
->caller
[2],
212 __entry
->caller
[3], __entry
->caller
[4], __entry
->caller
[5],
213 __entry
->caller
[6], __entry
->caller
[7])
217 * trace_printk entry:
219 FTRACE_ENTRY(bprint
, bprint_entry
,
224 __field( unsigned long, ip
)
225 __field( const char *, fmt
)
226 __dynamic_array( u32
, buf
)
229 F_printk("%08lx fmt:%p",
230 __entry
->ip
, __entry
->fmt
)
233 FTRACE_ENTRY(print
, print_entry
,
238 __field( unsigned long, ip
)
239 __dynamic_array( char, buf
)
243 __entry
->ip
, __entry
->buf
)
246 FTRACE_ENTRY(mmiotrace_rw
, trace_mmiotrace_rw
,
251 __field_struct( struct mmiotrace_rw
, rw
)
252 __field_desc( resource_size_t
, rw
, phys
)
253 __field_desc( unsigned long, rw
, value
)
254 __field_desc( unsigned long, rw
, pc
)
255 __field_desc( int, rw
, map_id
)
256 __field_desc( unsigned char, rw
, opcode
)
257 __field_desc( unsigned char, rw
, width
)
260 F_printk("%lx %lx %lx %d %x %x",
261 (unsigned long)__entry
->phys
, __entry
->value
, __entry
->pc
,
262 __entry
->map_id
, __entry
->opcode
, __entry
->width
)
265 FTRACE_ENTRY(mmiotrace_map
, trace_mmiotrace_map
,
270 __field_struct( struct mmiotrace_map
, map
)
271 __field_desc( resource_size_t
, map
, phys
)
272 __field_desc( unsigned long, map
, virt
)
273 __field_desc( unsigned long, map
, len
)
274 __field_desc( int, map
, map_id
)
275 __field_desc( unsigned char, map
, opcode
)
278 F_printk("%lx %lx %lx %d %x",
279 (unsigned long)__entry
->phys
, __entry
->virt
, __entry
->len
,
280 __entry
->map_id
, __entry
->opcode
)
283 FTRACE_ENTRY(boot_call
, trace_boot_call
,
288 __field_struct( struct boot_trace_call
, boot_call
)
289 __field_desc( pid_t
, boot_call
, caller
)
290 __array_desc( char, boot_call
, func
, KSYM_SYMBOL_LEN
)
293 F_printk("%d %s", __entry
->caller
, __entry
->func
)
296 FTRACE_ENTRY(boot_ret
, trace_boot_ret
,
301 __field_struct( struct boot_trace_ret
, boot_ret
)
302 __array_desc( char, boot_ret
, func
, KSYM_SYMBOL_LEN
)
303 __field_desc( int, boot_ret
, result
)
304 __field_desc( unsigned long, boot_ret
, duration
)
307 F_printk("%s %d %lx",
308 __entry
->func
, __entry
->result
, __entry
->duration
)
311 #define TRACE_FUNC_SIZE 30
312 #define TRACE_FILE_SIZE 20
314 FTRACE_ENTRY(branch
, trace_branch
,
319 __field( unsigned int, line
)
320 __array( char, func
, TRACE_FUNC_SIZE
+1 )
321 __array( char, file
, TRACE_FILE_SIZE
+1 )
322 __field( char, correct
)
325 F_printk("%u:%s:%s (%u)",
327 __entry
->func
, __entry
->file
, __entry
->correct
)
330 FTRACE_ENTRY(hw_branch
, hw_branch_entry
,
339 F_printk("from: %llx to: %llx", __entry
->from
, __entry
->to
)
342 FTRACE_ENTRY(power
, trace_power
,
347 __field_struct( struct power_trace
, state_data
)
348 __field_desc( s64
, state_data
, stamp
)
349 __field_desc( s64
, state_data
, end
)
350 __field_desc( int, state_data
, type
)
351 __field_desc( int, state_data
, state
)
354 F_printk("%llx->%llx type:%u state:%u",
355 __entry
->stamp
, __entry
->end
,
356 __entry
->type
, __entry
->state
)
359 FTRACE_ENTRY(kmem_alloc
, kmemtrace_alloc_entry
,
364 __field( enum kmemtrace_type_id
, type_id
)
365 __field( unsigned long, call_site
)
366 __field( const void *, ptr
)
367 __field( size_t, bytes_req
)
368 __field( size_t, bytes_alloc
)
369 __field( gfp_t
, gfp_flags
)
373 F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi"
375 __entry
->type_id
, __entry
->call_site
, __entry
->ptr
,
376 __entry
->bytes_req
, __entry
->bytes_alloc
,
377 __entry
->gfp_flags
, __entry
->node
)
380 FTRACE_ENTRY(kmem_free
, kmemtrace_free_entry
,
385 __field( enum kmemtrace_type_id
, type_id
)
386 __field( unsigned long, call_site
)
387 __field( const void *, ptr
)
390 F_printk("type:%u call_site:%lx ptr:%p",
391 __entry
->type_id
, __entry
->call_site
, __entry
->ptr
)